生活型

herb

形態特徵

• Stems 8–20 cm tall, erect or ascending, not repent, nearly glabrous, stem and leaves sparsely with minute multicellular scale-like hairs, much branched.
• Leaves chiefly radical, thick, linear, 4–8×0.4 cm, apex acute, base attenuate, narrowed into petiole, margins usually entire, rarely ciliate-serrate; cauline leaves few, 1–3, linear, gradually smaller.
• Heads loosely corymbose; peduncle slender. Involucre narrowly cylindric, 7–7.5 mm long, blackish, outer bracts calyculate, ovate, 1 mm long, inner bracts 5, linear, white margined, thick keeled toward base. Florets 5(–7); corolla yellow, 10–11×2–3 mm.
• Achenes brownish, fusiform, slightly compressed, 4–4.5×*0.7 mm, apex narrowed, beak 1.5 mm long. Pappus yellowish white, 4–5 mm long, bristles numerous, persistent, unequal.
• Similar to <i>I. laevigatum</i>, but distinguishable by having fewer involucral bracts, longer pappus, and smaller and linear leaves.

分布

• 台灣 : in the central mountain range, 3,000–3,500 m.

引證標本

NANTOU: Tienchih, Chiu 3373; Kuankao to Chungyangchinkuang, Chen 92; Tatachia to Paiyun, Peng 9546. KAOHSIUNG: Kuanshan, Chen 89. HUALIEN: Luanshan to Patolushan, Tamura et al. 21641.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 995. 1998.  (Fl. Taiwan 2nd edit.)